What about as a combined training horse where the dressage scores aren't taken so seriously. Low level jumper? I realize she's a tiny bit over at the knee and her shoulder angle is kind of steep. She is 15.3
Ah, but dressage scores are taken very seriously these days in eventing, considering that its 1/3 of the total score and if you go double-clear in XC and Stadium, your dressage score decides your placing.
Every sound horse can do 1st level, and 2L with a reasonably competent rider. 1L is nothing more than working W-T-C with some leg yielding and lengthenings.